5
stimulant(noun, cause, stimulus)
4
abettor
4
energizer(noun, spur, motivator)
4
motivator(noun, incentive, motive, instigator, activator)
4
stimulus(noun, cause)
3
gadfly(noun, nuisance, goad)
3
incentive(noun, cause, stimulus)
3
inspirer
3
mover(noun, spur, motivator)
3
prod(noun, cause, spur, stimulus, motivator)
3
prompter
2
arouser
2
catalyst(noun, stimulus)
2
cause(noun, stimulus)
2
encouragement(noun, cause, stimulus)
2
encourager
2
excitant(spur, motivator)
2
exciter
2
fillip(noun, cause, stimulus)
2
impeller
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APASmart Define. (2015). stimulator thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/stimulator/thesaurus/synonyms
ChicagoSmart Define. 2015. "stimulator thesaurus" https://smartdefine.org/stimulator/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, stimulator thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/stimulator/thesaurus/synonyms>.
MLASmart Define. "stimulator thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/stimulator/thesaurus/synonyms>